Population and migration

Size, age, sex and geographic distribution of the UK population, and changes in the UK population and the factors driving these changes. These statistics have a wide range of uses. Central government, local government and the health sector use them for planning, resource allocation and managing the economy. They are also used by people such as market researchers and academics.

Annual population estimates for the UK and its constituent countries, the regions and counties of England, and local authorities and their equivalents. Estimates for lower and middle layer Super Output Areas, Westminster parliamentary constituencies, electoral wards and National Parks in England and Wales and clinical commissioning groups in England.

Population projections provide an indication of the future size and age structure of the population based on mid-year population estimates and a set of assumptions of future fertility, mortality and migration. Available for the UK and its constituent countries as national population projections and for the regions, local authorities and clinical commissioning groups in England as subnational population projections. These projections are widely used for resource allocation and planning.